JP2002539579A - Shielding device for connecting strips in telecommunications and data engineering - Google Patents

Abstract

The present invention relates to a shielding device for strip terminals in telecommunications and data technology. The device consists of several shielding plates and at least one base rail arranged on it. The shielding plate (2) and the base rail (3) are formed as a unitary piece of sheet metal (28), each shielding plate (2) being connected to the base rail (3) via a narrow segment (4). And arranged on the base rail (3) with a rotation of 90 ° with respect to the base rail so as to simplify the assembly of the shielding device in the strip terminal.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a shielding device for a connecting strip in telecommunications and data engineering, comprising a shielding plate and at least one base rail arranged on the shielding plate. is there.

[0002] A shielding device of the general type is known from the connecting strip disclosed in US Pat. No. 5,160,273. In this case, crosstalk between adjacent insulation piercing termination contact elements of the connection strip
The (crosstalk) problem is solved by inserting a number of conductive shielding plates between each pair of insulating piercing termination contact elements. Crosstalk problems occur when large amounts of information are transmitted over electrical lines, and the information is transmitted at high frequencies. Transmission at high frequencies causes heat dissipation and interference between adjacent lines, especially when these lines are juxtaposed to each other in a connecting strip. The conductive shield plate is inserted between a pair of insulation piercing termination contact elements, the spacing between two adjacent pairs of insulation piercing termination contact elements being a pair of adjacent insulation piercing termination elements. It is larger than the interval between the contact elements. The shielding plate is in this case inserted between the pair of insulating piercing terminal contact elements into a slot extending across the length of the plastic body of the connecting strip and contacts the base rail located longitudinally within the plastic body. I do. The disadvantage of this is that when mounting the components in the plastic body, it is first necessary to mount the base rail with the contact tongues for contacting the individual shielding plates, and then push the individual shielding plates into the connecting strips It is necessary. As a result, the assembly is of relatively high complexity in telecommunications and data engineering to provide connection strips with shielding for high transmission rates.

[0003] The present invention therefore seeks to improve a shielding device of the general type in order to simplify the assembly.

To achieve the above object, the present invention provides a shield plate and a base rail integrally formed from a metal sheet, each shield plate being connected to the base rail via a narrow web, and It is configured to be positioned approximately 90 degrees about the rail. To achieve the object of the present invention, the metal sheet can be a solid metal sheet or a metal-coated plastic band. Thus, the shielding device of the present invention forms integral components, which are made of metallic material and whose base rails are assembled in the plastic housing of the connecting strip during the assembly of the connecting strip for telecommunications and data engineering. The shielding plate, which is inserted and integrally connected to the base rail, is simultaneously introduced into all the slots previously formed in the connecting strip. This greatly simplifies assembly.

[0005] In another embodiment of the present invention, the spacing between the shielding plates on the base rail may be designed differently. This allows the shielding plate to be adapted for various applications

The invention also provides a method for manufacturing a shielding device according to claim 3, a connecting strip for a shielding device according to claim 5, and finally a connecting strip according to claim 6. It also relates to the use of a shielding device within.

In the following, the invention will be described in more detail with reference to an embodiment of a shielding device which can or can be mounted on a connecting strip for telecommunications and data engineering.

In an embodiment, the shielding device 1 comprises seven flat, substantially U-shaped shielding plates 2, a base rail 3, and seven connecting webs 4, which are individually shielded on the base rail 3. Plate 2 is connected. The shielding device 1 is made of a conductive metal material, and
It is formed in one piece with the shielding plate 2, the base rail 3 and the connecting web 4 by a special stamping process from a metal sheet 28, in particular copper, copper alloy, steel or aluminum. In that case, the shielding plate 2 and the base rail 3 with the connecting web 4 initially lie in the same plane as the metal sheet 28. In the processing stage following the cutting process, the individual plates 2 are connected with the base rail 3 in the region of their connecting webs 4.
Turned over 0 °. A hole 5 in the base rail 3 is associated with each shielding plate 2 close to the connecting web 4, and this hole 5 is used for adjustment during the manufacturing process. The metal sheet 28 may be a metal-coated plastic band or the like.

In view of the method of processing the sheet shown in FIG. 4, the individual shielding plates 2 have a U-shaped design, and a substantially rectangular shielding panel 6 is adjacent to the connecting web 4 and has two forked portions. A shielding fork 7 is provided at an end far from the connection web 4. These shielding forks 7 are stepped by shoulders 8 which are tapered in cross section so that they are adapted to the internal cross section of the connecting strip 11.

FIG. 4 shows a cut or stamped shielding plate 2 of width B with an average spacing X between each other and a cut or stamped base rail 3 with holes 5 used for adjustment during manufacture. FIG. The length of the metal sheet 28 corresponds to the sum of the number of shielding plates of width B and the gap between cuts.

FIG. 5 shows the shielding plates 2 turned 90 ° with respect to the base rail 3 and usually at a distance X from one another. In order to obtain a shorter distance X ', a fold 9 is introduced into the base web 3 as shown in FIG.

The shielding device 1 is used in telecommunications and data engineering for high transmission rates, for individual insulation-piercing end contact elements 10 in a connection strip 11. Such a connecting strip 11 with a plurality of insulating piercing termination contact elements 10 arranged in pairs is shown and described in more detail in DE 43 25 952 C2. The connecting strip 11 is shown in FIGS. 6 to 9 and will be described in more detail below with respect to the shielding device 1 used.

The connecting strip 11 comprises a plastic housing 12 consisting of an upper part 13 and a lower part 14. These parts are locked to each other by a locking opening 15 in the upper part 13 and a locking projection 16 in the lower part 14. An end slot 17 is formed in the upper portion 13 and has an integrally formed end projection 18 and end web 19. These serve to hold the insulation piercing termination contact element 10. The latter terminating contact element is formed from a sheet-like flat material and comprises two contact webs 21 surrounding a contact slot 20 therebetween. The base web 22 is adjacent to contact fingers 23, which merge with spring contacts 24. The two pairs of insulation piercing type end contact elements 10 are respectively arranged in close proximity to each other, and the distance D between two pairs of adjacent insulation piercing type end contact elements 10 is apparent from FIG. It is considerably larger than the distance d between the insulating piercing end contact elements 10 which are arranged close to each other. The individual shielding plates 2 of the shielding device 1 are inserted into a total of seven wider cross-sectional areas 25 of the connecting strip 11, as shown in broken lines in FIGS. 6 and 7 and in solid lines in FIGS.

The base rail 3 with the individual shielding plates 2 is connected to the housing 1 of the connecting strip 11.
2, the upper portion 13 in this embodiment has a respective transverse slot 27.
, Each of which has a shielding plate 2 pressed into these slots. The base rail 3 is located in a longitudinal slot 21 in the bottom region of the lower part 14, as shown in FIGS. The shielding panel 6 and the shielding fork 7 of each individual shielding plate 2 substantially cover the entire cross section inside the connecting strip 11, as shown in FIG. 9 in particular, so that the relatively large crosstalk attenuation of the conductive shielding plate 2 As a result, an insulation piercing termination contact element 10 is obtained for a high transmission rate.
Separate each pair of Large area conductive shielding plate 2 in connection strip 11
Does not increase the physical volume of the connecting strip, nor does it require more expense to make it.

The shielding device 1 does not require grounding. All that matters is that the individual shielding plates 2 are conductively connected to one another. This is achieved by a base rail 3 which is common to all shielding plates 2. The shielding plate 2 ensures that the influence charging of the insulation piercing terminal contact element 10 is reduced in the adjacent insulation piercing termination contact element 10 and thus the interference voltage is reduced. Influence the electric field in some way. This produces a relatively high signal-to-noise ratio. The signal-to-noise ratio is high, so that higher frequencies can be transmitted without adjacent lines of the insulation-piercing termination contact element 10 having the opposite effect on each other.

The number of shielding plates 2 in shielding device 1 depends on the number of pairs of insulating piercing end contact elements 10. In this embodiment, an eight-pair module is shown, which has seven chambers 26 for a total of seven shielding plates 2. The usual pair combinations are 4/3, 8/7, 10/9, 12/11, 16/15, 20/19, 24/23, and 25/24, where the insulation pierce termination The number of pairs of contact elements 10 and the number of shielding plates 2 are indicated in each case.

In the HIGHBAND 8 connection strip 11, the standard spacing X between the shielding plates 2 is X =
12.6mm. However, in the HIGHBAND 10 connection strip 11, for example, the spacing is X
'= 9.6 mm. For this purpose, the fold 9 is introduced into the base rail 3 between each of the individual shielding plates 2. This spacing cannot be obtained by directly punching out the shielding device 1 from the metal sheet 28. This is because the width B of each shielding plate 2 needs to be approximately 12 mm because of the width of the connection strip 11. Therefore, in the HIGHBAND8 connecting strip 11, the width B = 12.6 mm and the interval X = 12.
.6mm dimensions complement each other appropriately. However, at the narrower interval X ', the fold 9
is necessary. These folds may be replaced by some other kind of means for reducing the length of the base rail 3.

[Brief description of the drawings]

FIG. 1 is a perspective view of a shielding device.

FIG. 2 is a front view of the shielding device.

FIG. 3 is a plan view of the shielding device.

FIG. 4 is a plan view of a metal sheet having a punch-out shielding plate and a base rail.

FIG. 5 is a view, corresponding to FIG. 4, of a part of a shielding device having a folded base rail;

FIG. 6 is a side view of the connection strip.

FIG. 7 is a cross-sectional view of the connecting strip taken on line AA of FIG. 6;

FIG. 8 is a plan view of the connection strip shown in FIG. 6;

9 is a cross-sectional view of the connecting strip taken on BB of FIG. 8;

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Claims (6)

[Claims] 1. A shielding device for a connecting strip in telecommunications and data engineering, comprising a number of shielding plates and at least one base rail arranged on said shielding plate. (2) and the base rail (3) are integrally formed from a metal sheet (28), and each shielding plate (2) is formed.
) Are connected to the base rail (3) via a narrow web (4) and are arranged approximately 90 ° rotated with respect to the base rail (3). 2. The distance (X, X ') between the shielding plates (2) is in particular based on the base rail (3).
2. The shielding device according to claim 1, wherein the folds can be designed differently. 3. A method for manufacturing a shielding device for connecting strips in telecommunications and data engineering according to claim 1 or 2, comprising several shielding plates (2) and a base rail (3) supporting said shielding plates. ), As well as a web (4) connecting the shielding plate (2) to the base rail (3) are integrally formed from the metal sheet (28), and the shielding plate (2) is subsequently formed in the region of the web (4) by the base rail ( The method characterized in that it is turned approximately 90 ° with respect to 3). 4. The distance (X, X ') between the shielding plates (2) is in particular based on the base rail (3).
4. The method according to claim 3, wherein the folds (9) can be designed differently. 5. An insulation-piercing terminal contact element disposed in a plastic housing, a shield plate disposed between the insulation-piercing terminal contact elements, and at least one of the shield plates disposed on the shielding plate. In a connection strip for telecommunications and data engineering with one ground rail, a shielding plate (2) and a base rail (3).
Are integrally formed from a metal sheet (28), each shielding plate (2) being connected to the base rail (3) via a narrow web (4) and 9 with respect to the base rail (3).
A connecting strip, which is arranged to be turned by 0 °. 6. A shielding in a connection strip (11) for a high transmission rate in telecommunications and data engineering, comprising a base rail (3) and a shielding plate (2), said shielding device being formed integrally with the base rail. 90 ° with respect to the base rail (3)
Use of the shielding device (1), which is turned.